Jack hammer shield

ABSTRACT

For use by a workman when drilling in concrete with a jack hammer; a drill positioning guide and a shield protectively enclosing the guide. Two spaced parallel panels with a guide sleeve bracketed therebetween provide an accident minimizing shield. This shield and the self-contained guide can be moved from place to place and can be effectually straddled and shiftably maneuvered by the user. Should the drill break, as it often does, it will be trapped with in the confines of the guide or the enclosing panels, as the case may be.

United States Patent 2,082,418 6/1937 Palmer et al [72] Inventor Martin Stanton 2,107,864 2/1938 Hunter 175/209 224 William St, Port Chester. N.Y. 19573 2,730,335 l/1956 Lamrrecht 175/209 [21] App]. No. 874,887 3,351,143 1 H1967 Seibold et a1. 175/209 522 m d Z; Primary Examiner.lames A. Leppink Attorneys-Clarence A. O'Brien and Harvey B. Jacobson [54] JACK HAMMER SHIELD v 7 Claims, 3 Drawing Figs.

US. For use a workman when in concrete l75/422 with a jack hammer; a drill positioning guide and a shield pro- [5 l l .L [ectively enclosing the guide Two spaced parallel panels with 0 a guide sleeve b acketed therebetween provide an accident 21 1; 173/ l 71 minimizing shield. This shield and the self-contained guide can be moved from place to place and can be effectually straddled [561 Reterenoes and and shiftably maneuvered by the user. Should the drill break,

. UNITED STATES PATENTS as it often does, it will be trapped with in the confines of the guide or the enclosing panels, as the case may be.

JACK HAMMER SlllllllELD This invention relates to an accident reducing safeguarding shield for use in conjunction with a difficult-to-control jack hammer and has to do, more particularly, with an adaptation which can be placed and controllably maneuvered atop a concrete or similar work surface, and which lends itself to feasible and protective use in that the overall shield can be straddled, pushed, and managed by the user as he shifts from place to place.

Handling an unwieldy jack hammer is not only a laborious job, it can be and often is dangerous, particularly when drilling a concrete surface. Despite the many perplexing difficulties which are encountered and day-to-day accidents which have occurred with injurious and crippling results, it would appear that no acceptably usable safeguarding equipment has been offered or provided for users of jack hammers. Accordingly, and with the foregoing in-mind it is an object of the present invention to provide an acceptable shield which lends itself to maneuverable control by the user and which, though inconvenient will enable him to cope with an solve the problem of reducing dangerous accidents to an acceptable minimum.

Briefly, the herein-disclosed invention pertains to a user protecting jack hammer safeguarding device characterized, generally stated, by a rigid sleeve of requisite vertical height and cross-sectional dimension and which is open at its upper and lower ends and which constitutes a drill receiving, aiming and spotting guide. A pair of cooperating shields, for example, suitable walls or panels are located on diametrically opposite sides of and effectually enclose the guide sleeve. These panels have median portions which are secured to coacting diametrically opposite side portions of the guide sleeve. The overall device is portable and the surface contacting edges are slidingly shiftable over the concrete or other work surface. The shields are so interconnected and associated with the enclosed sleeve that they are adapted to permit the workman to straddle the panels and to hold the same in a reasonably steady position and to offer protection particularly for his feet and legs.

More explicitly the means for securing the shield to the sleeve has to do with a pair of like brackets. These brackets are diametrically opposite each other and are interposed between and connected with diametrically opposite sides of the sleeve and median portions of the respective panels. The the ends desired the brackets are preferably L-shaped in edge elevation.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. 1 is a view in perspective ofajack hammer shield constructed in accordance with the principles of the invention and showing the manner in which the same can be and is preferably used.

FIG. 2 is an enlarged cross-sectional view taken approximately on the plane of the section line 2-2 of F IG. ll looking in the direction of the indicating arrows.

FIG. 3 is a view at right angles to FIG. 2 taken on the vertical section line 3-3 of FIG. 2.

Broadly, the portable ready-to-use protective shield is characterized by a sleeve, a pair of brackets and a pair of panels.

The aforementioned sleeve comprises a length of tubing or section of metal pipe of requisite gauge and height. This sleeve is denoted by the numeral 6 and has upper and lower open ends 8 and lit). The sleeve is of a cross-sectional dimension that the drill 12 of the jack hammer 14 can be fitted therein in a manner to penetrate and drill the concrete or other work surface 16. The two enclosing shields are preferably in the aorm of lightweight wooden or equivalent walls or panels. These panels are of rectangular shape and are individually denoted by the numeral 18. It will be noted that the panels are proportional with the size of the relatively short guide sleeve 6. This is to say the forward and rearward half portions to the left and right of the guide as shown in FIG. 3 extend adequate distances to provide the protective guards required. The lower straight edge of each panel denoted at 20 is flush with the edge 10 in the manner shown. The upper straight longitudinal edge 22 of the entire upper portion 24 of each panel extends well above the upper open end of the guide sleeve. These panels are mounted in spaced-apart parallelism on diametrically opposite sides of the guide sleeve by way of adapter brackets 26. Each bracket is made up of appropriate metal and is substantially L-shaped in edge elevation. The short horizontal limb is denoted at 28 and has an upturned or laterally directed terminal portion 30 which is welded to the exterior surface of the lower part of the guide sleeve. The upstanding vertical limb 32 is of requisite length or height that it can be superimposed upon and bolted or otherwise fastened as at 34 to the coacting surface portion of the panel. Thus, these two L-shaped brackets are welded to diametrically opposite sides of the sleeve and the median portions of the panel are joined thereto to provide the overall ready-to-utilize shield. It should be noted that the lower surface portions 36 of the bracket legs 28 are in a common plane with each other and also are substantially flush with the bottom edge 10 and the lower edges 20 of the coacting parts. This, thus, balanced and constructed device is capable of being placed on the concrete or other work surface and when properly located can be maneuvered and shifted into the desired position by the user. When properly located the drill stem 12 is positioned and the drilling function is undertaken in the usual way. Experience has shown that the device can be held in place with certainty and reliability by the feet and legs of the user in the manner shown in FIG. 1. It follows that in case of breakage of the drill the fact that it is confined, it will be trapped and the likelihood of becoming involved in a serious accident will be reduced to an acceptable minimal.

It is believed that a studied consideration of the views in conjunction with the description and claims will enable the reader to obtain a clear and comprehensive understanding of the invention and manner of use.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What I claim as new is as follows:

1. For use by a workman while drilling a concrete surface with a manually controllable jack hammer, a user protecting jack hammer safeguarding device comprising a rigid sleeve open at its upper and lower ends and which constitutes a drill directing guide, shields located on diametrically opposite sides of and effectually enclosing said sleeve and having median portions secured to coacting side portions of said sleeve, said device being portable and slidingly shiftable over said surface, said shields being designed and adapted to permit the workman to straddle the same while handling the jack hammer.

2. The device defined in and according to claim 1, and wherein said shields comprise a pair of opposed horizontally elongated spaced parallel panels having lower marginal edges disposed in a common plane level and coplanar with the open bottom of said sleeve. I

3. The device defined in and according to claim 2, and wherein said panels are of a length that forward and rearward half-portions project well beyond the forward and rearward surfaces, respectively, of said sleeve, and being of a height that the median and upper portions extend to a level well above the upper open end of said sleeve.

4. The device defined in and according to claim 3, and wherein the means securing the shields to the sleeve comprises a pair of like brackets, said brackets being diametrically opposite each other and interposed between and connected with diametrically opposite sides 05 the sleeve and median portions of the respective panels.

5. The device defined in and according to claim 4, and wherein said brackets are L-shapcd in edge elevation, each bracket having horizontal legs which upwardly bent inner ends abutting and fixed to coacting surface portions of said sleeve and vertical legs which are superimposed upon and fixed to interior surface portions of the respectively cooperable panels.

6. The device defined in and according to claim 5, and wherein said brackets are made from strap iron and the bottom sides of the horizontal legs are in a common plane which is also common with the plane of the lower end of the sleeve and lower marginal edges of said panels.

7. For use by a workman while drilling a concrete surface with a manually controllable jack hammer, a user protecting jack hammer safeguarding device comprising a rigid sleeve of requisite height and cr0ss-sectional dimension open at its upper and lower ends and providing a drill directing guide, a pair of opposed spaced parallel lightweight panels located on opposite sides of the sleeve, and a pair of substantially L- shaped brackets, said brackets having vertical legs attached to median portions of said panels and horizontal legs having inner endsjoined t0 diametrically opposite sides of said sleeve. 

1. For use by a workman while drilling a concRete surface with a manually controllable jack hammer, a user protecting jack hammer safeguarding device comprising a rigid sleeve open at its upper and lower ends and which constitutes a drill directing guide, shields located on diametrically opposite sides of and effectually enclosing said sleeve and having median portions secured to coacting side portions of said sleeve, said device being portable and slidingly shiftable over said surface, said shields being designed and adapted to permit the workman to straddle the same while handling the jack hammer.
 2. The device defined in and according to claim 1, and wherein said shields comprise a pair of opposed horizontally elongated spaced parallel panels having lower marginal edges disposed in a common plane level and coplanar with the open bottom of said sleeve.
 3. The device defined in and according to claim 2, and wherein said panels are of a length that forward and rearward half-portions project well beyond the forward and rearward surfaces, respectively, of said sleeve, and being of a height that the median and upper portions extend to a level well above the upper open end of said sleeve.
 4. The device defined in and according to claim 3, and wherein the means securing the shields to the sleeve comprises a pair of like brackets, said brackets being diametrically opposite each other and interposed between and connected with diametrically opposite sides of the sleeve and median portions of the respective panels.
 5. The device defined in and according to claim 4, and wherein said brackets are L-shaped in edge elevation, each bracket having horizontal legs which upwardly bent inner ends abutting and fixed to coacting surface portions of said sleeve and vertical legs which are superimposed upon and fixed to interior surface portions of the respectively cooperable panels.
 6. The device defined in and according to claim 5, and wherein said brackets are made from strap iron and the bottom sides of the horizontal legs are in a common plane which is also common with the plane of the lower end of the sleeve and lower marginal edges of said panels.
 7. For use by a workman while drilling a concrete surface with a manually controllable jack hammer, a user protecting jack hammer safeguarding device comprising a rigid sleeve of requisite height and cross-sectional dimension open at its upper and lower ends and providing a drill directing guide, a pair of opposed spaced parallel lightweight panels located on opposite sides of the sleeve, and a pair of substantially L-shaped brackets, said brackets having vertical legs attached to median portions of said panels and horizontal legs having inner ends joined to diametrically opposite sides of said sleeve. 